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#1
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chirping sound on cold start
I am experiencing a light chirping sound when I start my e420 from cold engine. It is light in intensity and goes away after a few minutes. Any ideas as to what may be going on or getting ready to go on..
Thanks!
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Rob Armstrong, Charlotte, NC Mountain Island Lake RobAinCLTNC@hotmail.com 2004 VW Passat GLS TDI-50k 2006 Honda Odyssey EX-L 7k FOR SALE 1991 300TE 228k 2003 Subaru Outback 57k Silver/Black-SOLD 2005 C230K 18k Pewter/Grey-SOLD 1997 E420 108k Black/Grey-SOLD 1986 560sl 200k Black/Palimino-SOLD 1985 300sd 340k-SOLD 1979 240d 170k-SOLD 2000 Volvo V70XC-POS couldn't sell fast enough |
#2
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just bringing this one back to the top..does anyone have any ideas?
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Rob Armstrong, Charlotte, NC Mountain Island Lake RobAinCLTNC@hotmail.com 2004 VW Passat GLS TDI-50k 2006 Honda Odyssey EX-L 7k FOR SALE 1991 300TE 228k 2003 Subaru Outback 57k Silver/Black-SOLD 2005 C230K 18k Pewter/Grey-SOLD 1997 E420 108k Black/Grey-SOLD 1986 560sl 200k Black/Palimino-SOLD 1985 300sd 340k-SOLD 1979 240d 170k-SOLD 2000 Volvo V70XC-POS couldn't sell fast enough |
#3
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Perhaps the accessory belt? It might be glazed. Is this belt original?... then it may have stretched to the limit of the tensioner and should be replaced, even if it looks good.
I'm wrestling with the same problem on my Marquis and it needs to be checked out.
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95 E320 Cabriolet, 159K |
#4
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Check your air pump, belt. Air pump is activated in cold start.
Last edited by DOCTOR; 03-20-2004 at 03:27 AM. |
#5
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mine was belt tensioner
I had similar problem few years ago and it was the belt tensioner
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2010 ML350 Bluetec 2012 Mustang Convertible |
#6
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This is really timely for me. I've noticed a chirping coming from the left side of the engine lately which goes away after a couple minutes. Sure seems to be coming from the belt tensioner, but I figured it wouldn't go away if it were the tensioner.
Sure is a better ($) alternative than the AIR pump!
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Steve '93 400E |
#7
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The chirping on my Marquis also goes away after a few minutes. I'm convinced it has to do with the cold weather. Belt loads are highest when the car is cold.... ps fluid is thickest, coolant has a somewhat higher viscosity, belt is least sticky. So if there is any weakness in the system, it'll show up on a cold start.
What puzzles me on my problem is the belt was replaced 3 yrs/16,000 miles ago.... too soon for belt replacement. I figure only two things can go wrong with a tensioner -- the spring breaks or the bearing gives out. The spring should be easy to check. A bad bearing should squeal constantly -- right? One thing I do whenever the belt is removed is that I clean the pulley grooves in a serpentine system. I notice a lot of crud gets built up in the grooves. I imagine it can push up on the belt and prevent full-grip engagement.
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95 E320 Cabriolet, 159K |
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